Portland firefighters responded to a fire at the Grant High School construction site around 3 p.m. Thursday.

Lt. Rich Chatman, a spokesman with Portland Fire & Rescue, said no one was injured and that there is no visible damage to the structure. The school is located at Northeast 33rd Avenue and Tillamook Street.

The project to modernize Grant High started in June, and all students and teachers have taken up residence at Marshall High School until construction is complete. Completion is slated for fall of 2019.

Chatman said the fire was upgraded to a two-alarm fire because crews didn't initially know how large it was. But when it turned out to just be a hydraulic lift on fire in the basement, the extra crews were recalled, he said.

The fire was isolated to the machinery, Chatman said. The lift was burning in an open area, and the fire was extinguished quickly.